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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-09-06 22:14:43 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-09-06 22:14:43 +0000 |
| commit | 2a9870bd4c21a53bb1fad26248764444e0d67585 (patch) | |
| tree | e092e83c22a3a8cf7bfdb46857702de8b9cbd22d | |
| parent | f5c9ea10921f63acfd0fe9e322efbcc960c97f4d (diff) | |
| download | gcc-2a9870bd4c21a53bb1fad26248764444e0d67585.tar.gz | |
* simplify-rtx.c (simplify_binary_operation): Simplify contents
of CONST.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45447 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7c4929831a6..16c65e2b063 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-09-06 Richard Henderson <rth@redhat.com> + + * simplify-rtx.c (simplify_binary_operation): Simplify contents + of CONST. + 2001-09-06 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * config/rs6000/rs6000.c (rs6000_emit_prologue): Fix DWARF2 register diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index ea1cc6d285a..7f358d3ddc4 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1275,6 +1275,28 @@ simplify_binary_operation (code, mode, op0, op1) return simplify_gen_binary (AND, mode, op0, gen_rtx_NOT (mode, XEXP (op1, 0))); } + + /* Simplify operations with constants containing embedded offsets. */ + if (GET_CODE (op0) == CONST) + { + tem = simplify_binary_operation (code, mode, XEXP (op0, 0), op1); + if (tem) + { + if (CONSTANT_P (op1) && ! CONSTANT_P (tem)) + tem = gen_rtx_CONST (mode, tem); + return tem; + } + } + if (GET_CODE (op1) == CONST) + { + tem = simplify_binary_operation (code, mode, op0, XEXP (op1, 0)); + if (tem) + { + if (CONSTANT_P (op0) && ! CONSTANT_P (tem)) + tem = gen_rtx_CONST (mode, tem); + return tem; + } + } break; case MULT: |